Packaging bag



FIG. 1 is a front elevational view of a packaging bag, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 4 is a perspective view thereof, as viewed from the top; and,

FIG. 5 is a bottom plane view thereof. 

The ornamental design for a packaging bag, as shown and described. 